# Optical Coherence of B Center Quantum Emitters in Hexagonal Boron Nitride

https://mdr.nims.go.jp/datasets/e65f585e-8d40-499c-80e8-42498618448d

## File

- [2025A00503G_2410.16681v1.pdf](https://mdr.nims.go.jp/filesets/02eaec86-1557-4aa0-b9c3-e271b595b8b3/download) ([Detail](https://mdr.nims.go.jp/filesets/02eaec86-1557-4aa0-b9c3-e271b595b8b3.md))

## Id

e65f585e-8d40-499c-80e8-42498618448d

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2026-07-27T23:57:13.805448Z

## Updated at

2026-07-28T03:26:14.516895Z

## Published at

2026-07-28T07:27:18.682540Z

## Doi



## First published url

https://doi.org/10.1021/acsphotonics.4c02088

## Date published

2025-03-19

## Recorded date published

2025-3-19

## Resource type

journal_article

## Manuscript type

accepted_manuscript

## Collection



## Title

- title: Optical Coherence of B Center Quantum Emitters in Hexagonal Boron Nitride
  title_type: original
  lang: en

## Description

- description: Coherent quantum emitters are a central resource for advanced quantum
    technologies. Hexagonal boron nitride (hBN) hosts a range of quantum emitters
    that can be engineered using techniques such as high-temperature annealing, optical
    doping, and irradiation with electrons or ions. Here, we demonstrate that such
    processes can degrade the coherence and, hence, the functionality of quantum emitters
    in hBN. Specifically, we show that hBN annealing and doping methods that are used
    routinely in hBN nanofabrication protocols give rise to fluctuations in the spectrum
    and intensity of B center quantum emitters. This decoherence is characterized
    in detail and attributed to defects that act as charge traps, which fluctuate
    electrostatically during SPE excitation and induce spectral diffusion. The decoherence
    is minimal when the emitters are engineered by electron beam irradiation of as-grown,
    pristine flakes of hBN, where B center line widths approach the lifetime limit
    needed for quantum applications involving interference and entanglement. Our work
    highlights the critical importance of crystal lattice quality to achieving coherent
    quantum emitters in hBN, despite the common perception that the hBN lattice and
    hBN SPEs are highly stable and resilient against chemical and thermal degradation.
    It underscores the need for nanofabrication techniques that are minimally invasive
    and avoid crystal damage when engineering hBN SPEs and devices for quantum-coherent
    technologies.
  description_type: abstract
  lang: en

## Creator

- name: Jake Horder
  role: author
- name: Dominic Scognamiglio
  role: author
- name: Nathan Coste
  role: author
- name: Angus Gale
  role: author
- name: Kenji Watanabe
  role: author
  orcid: https://orcid.org/0000-0003-3701-8119
  organization: National Institute for Materials Science
- name: Takashi Taniguchi
  role: author
  orcid: https://orcid.org/0000-0002-1467-3105
  organization: National Institute for Materials Science
- name: Mehran Kianinia
  role: author
- name: Milos Toth
  role: author
- name: Igor Aharonovich
  role: author

## Contact agent



## Publisher

organization: American Chemical Society (ACS)

## Managing organization



## Keyword

- subject: Hexagonal boron nitride
  schema: not_defined
- subject: Quantum emitter
  schema: not_defined
- subject: Decoherence
  schema: not_defined

## Rights

- description: This document is the Accepted Manuscript version of a Published Work
    that appeared in final form in ACS Photonics, copyright © 2025 American Chemical
    Society after peer review and technical editing by the publisher. To access the
    final edited and published work see https://doi.org/10.1021/acsphotonics.4c02088
  identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo

start_date: 2025-01-13
end_date: 2026-01-13

## Journal

- title: ACS Photonics
  issn: '23304022'
  volume: '12'
  issue: '3'
  start_page: 1284
  end_page: 1290

## Conference



## Related item



## Funding

- identifier: CE200100010
  funder_name: Australian Research Council
- identifier: DP240103127
  funder_name: Australian Research Council
- identifier: FT220100053
  funder_name: Australian Research Council
- identifier: 21H05233
  funder_name: Japan Society for the Promotion of Science
- identifier: 23H02052
  funder_name: Japan Society for the Promotion of Science

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## Fileset

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  filename: 2025A00503G_2410.16681v1.pdf
  content_type: application/pdf
  size: 1059750
  md5: 7c9df864f4bce3a606fb489622f8b767

## Thumbnail

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filename: 2025A00503G_2410.16681v1.pdf